I bought a pre-order pack / registered the key before a set date, and am supposed to get some stuff for it (e.g. Screaming Demon ring, cat, dog, etc.). But I cannot seem to find it in my inventory! Where do I get my rewards?
Log in to your character, open the in-game shop (!) (default key ".") and then use the first menu entry on the left. There they are, your items - you can now "buy" them for 0 points. After buying, they appear in your inventory.
You can do this once per character, I'm told.